In the 1970s VAV (Variable Air Volume) systems replaced CAV (Constant Air Volume) systems. Concurrently, the 8-bit microprocessor with 4500 transistors was introduced. In the field of commercial HVAC systems, VAV systems became the first choice and were used as baselines for energy standards. Over the years, underfloor air distribution, low temperature and conductive cooling systems such as chilled beams, variable refrigerant flow, in- slab radiant were created to try to surpass the energy benchmark of VAV systems at 2-3 times the cost of a VAV system. Moreover, conductive cooling systems still require a DOAS (Dedicated Outdoor Air System). The inadequate turndown ratio of current flow measurement devices adds unnecessary pressure drop which increases costs, energy consumption, and noise generation, adds millions of part numbers/skews, engineering time and time to completion of a project that results in a dysfunctional business model.

The digital age revolution has made advancements in building technologies software and digital infrastructures. Today’s building technologies software is powerful and able to accomplish much more; however, interfacing into low turndown downstream zone devices limits the building technologies' software and digital infrastructure.

Company: Disruptive Endeavors LLC